Collapsible filter

a filter and collapsible technology, applied in the field of collapsible filters, can solve the problems of reducing the flavor of coffee and not substantially improving the taste of co

Inactive Publication Date: 2000-08-15
KX TECH LLC (DW US)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, heavily chlorinated water, typically found in tap water obtained from municipal water supplies, or water having a high calcium content, can detract from th...

Method used

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Examples

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Embodiment Construction

The present invention is directed to a filter that may be used with a beverage maker, typically a coffee maker, of the type having an open-top brew basket for containing a paper or metallic filter element. Referring to FIG. 1, the filter 10 has a filter medium 12 for filtering chemical impurities and particulate matter from water passing therethrough. A lower rim 14 is sealably disposed around the filter medium 12. If the filter is to be used in the brew basket of a coffee maker, the lower rim 14 is dimensioned so that it will fit inside thereof. The lower rim 14 defines an active filtration area.

The seal between the rim 14 and filter medium 12 can be provided by the use of a hot melt adhesive between the rim and the filter medium, by ultrasonic welding of the filter medium to the rim 14, by insert molding the rim 14 around the filter medium 12 or by a combination of the above-described techniques. Those skilled in the art will appreciate that if a hot melt adhesive is used to join ...

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Abstract

A collapsible fluid filter is disclosed. The filter comprises, in part, a filter medium for filtering impurities from a fluid and a lower rim sealably disposed around the filter medium. The filter further includes an upper rim and a fluid impervious collapsible wall connected between the upper and lower rims. The filter medium, the lower rim, the collapsible wall and the upper rim define a fluid containing reservoir. The collapsible wall of the filter can be collapsed between the upper and lower rims so as to minimize the volume occupied by the fluid containing reservoir and by the filter for storage purposes and can be expanded between the upper and lower rims so as to maximize the volume occupied by the fluid containing reservoir and by the filter generally during use.

Description

1. Field of the InventionThe present invention relates to filters for filtering liquids, such as water. More particularly, the present invention relates to a collapsible filter that may be collapsed to reduce its volume for storage and expanded to increase its volume for use.2. Description of the Prior ArtFilters of various configurations for filtering gasses and liquids are employed daily in households. These filters are used to remove chemical impurities as well as remove and hold particulate matter from passing along with the filtrate.The making of a pot of coffee is one example of a household use of filters. Most coffee drinkers will generally agree that coffee tastes better when it is made with water that has been filtered to adsorb impurities, especially chemical impurities, that affect flavor. For example, heavily chlorinated water, typically found in tap water obtained from municipal water supplies, or water having a high calcium content, can detract from the flavor of coffe...

Claims

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Application Information

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IPC IPC(8): A47J31/06A47J31/44
CPCA47J31/06A47J31/0647A47J31/446
Inventor KOSLOW, EVAN E.HUDA, STEPHEN P.
Owner KX TECH LLC (DW US)
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